IAB: an Individual Address Block, a /36 covering 4,096 addresses. IEEE's predecessor to MA-S; no longer issued, but existing assignments remain valid.
Prefix40:D8:55:04:30:00 /36
Vendor addressRichard-Schirrmannstr. 29 Titisee-Neustadt BW DE 79822
Country🇩🇪 Germany
RegisteredNov 25, 2012
Block range40:D8:55:04:30:00– 40:D8:55:04:3F:FF
Address capacity4,096
AdministrationUniversally administered: its prefix comes from a block registered through the IEEE Registration Authority
TransmissionUnicast: addressed to a single device
SourceIEEE Registration Authority
Address capacity is the size of this registered block, not a count of devices actually manufactured or online. Registration identifies the organization holding the block, not a specific device model or unit.
Curious how a prefix like this turns into a full address? See how MAC addresses are structured →
Example addresses in this block
Where this block sits
Previous
40:D8:55:04:20:00 /36
Mango Communicaitons Inc.
Next
40:D8:55:04:40:00 /36
An Chen Computer Co., Ltd.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
SchulerControl GmbH holds 1 registered blocks in the IEEE registry, ranking #25,360 of 33,427 organizations by block count.